This isn't possible to answer, you would need to provide the following:
Even then, it will still only be a rough estimate, at the moment I could say about a year maybe.
If you are asking about RuneScape, It does not tell you how long it is.
1 month
There are easier ways to make money than that. Do fishing.
Long-finned barb
There are currently no ways to mine in free to play RuneScape and be away from the keyboard for a long time. The only way in Runescape to mine away from the keyboard is through the Living Rock Caverns, which is a pay to play feature and is not accessible by free to play players.
It depends how long you are on Runescape.
8-10 years
Lamb Barb Crab
No body can tell how long it will take it depends on your methods and the places your fish ... But if u go to rune tips it'll help allot!
fishing nets are good as long as they are legal
barb BARB it is similar to an Arabian well not really but yeah long distance
as long as your java is of a new version, runescape should work fine.